Furnace.



B. L. WORTHEN.

FURNACE.

APPLIOATION FILED HAY 31, 1905.

Patented Nov. 29, 1910.

2 BHEETBSHEET l.

o "s Il WITNESSES:

B. L. WORTHBN.

FURNACE.

-APPLIOATION FILED MAY 31, 1905.

Patented N ov. 29, 1910.

2 SHEETS-SHEET 2.

ATTR/VEY 'invention; and Fig. 2 is a A, UNITED STATES PATENT oFmoE.

lRURT L. WORTHEN, or TUcsoN, ARIZONA TERRITORY, AssxeNoR or ONE-HALF rroMERRILL P. FREEMAN,

FURNACE..

4To all whom it may concern.'

Be itknown that I, BURT L. WORTHEN, a citizen of the United States, anda resident of Tucson, in the county of Pima and Territory of Arizona,have invented a new and Improved Furnace, of which the 4followingmechanism for compensating the expansion ialnd contraction due tovarying degrees of eat.

My invention still further relates to certain specific improvements inthe details of the furnace.

Reference is to be had tothe accompanying drawings forming a partof thisspecication, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a fragmentary vertical-cross section showing a furnaceequipped withmy section upon the line 2 2 of Fig. of the arrow and planview. y

Water jackets are shown at l3 and are provided with walls 4, 5 turnedoutwardly and upwardly at their lower extremities and separated bypartitions 6 of metal. Below these water jackets are other jackets 7provided with walls 8, 9 similarly separated by partitions 10, also ofmetal. A fireproof lining 7a is provided. The tap hole is shown at 7". Ajolning plate 11 is mounted at an oblique angle upon the water jackets'3 and 7. This joining plate supports a nulnber of twyer cylinders 12each provided with a cap 18 secured b v means of a bolt 14. Each capengages a lug 14a and is free to expand and to contract within the sameto a limited extent in order to allow of expansion and contraction dueto varying degrees of heat. Each twyer cylinder 12 is providedinternally with an annular bead 15, and extending through this annularbead is a sleeve 16 provided lnternally with an annular bead 17, thisannular bead normally restin against the bead 15 as indicated at the leof Fig. 1. The joining plate 11 is connected by bolts 18 with the upperwater jacket, and is Specification of Letters Patent. Application ledMay 81, 1905. Serial'No. 263,052.

p means the 1, looking in the direction showing certain parts inPatented Nov. 29, 1910.

provided with annular ianges 19 which en- .circle the respective tubularcylinders 12. Brackets 20 are mounted'u on lthe lower water jacket andhook slig tly over the lower edge'of the joining plate. By this jjoining'plate with all parts mounted thereupon is free to expand andcontract under the inliuence of varying degrees; of heat withoutinterfering with the action of the furnace or admitting any substantialuantity of air into the same. The 'twyer cy inders l2 are provided withears 22 integral therewith, and through these ears pass bolts 23 whichnuts 24 as indicated at the By removing the nuts 24 the tubular cylineders 12 may readily be lifted out and by removing the caps 13, whetherthe tubular cylinders 12 be mounted 'upon the furnace or not, thesleeves 16 may be taken out. 'Each twyer consists of one of the twyercylinders 12 and a twyer sleeve 16. Gates 25, 26a open and close thepipes 25, 26 independently.

The upper water jacket Sis connected rigidly with a horizontal plate 28supported by I-beams 29, these I-beams resting upon larger I-beams 30which are in turn supported upon posts 31.- Bythis means practically allof the weight of the upper water jacket is suspended upon the posts 31..Jacks 32 support the weight of the lower water jacket 7 and'of theparts resting thereupon and supported thereby. By the arrangement abovedescribed the upper and lower water jackets 3 and 7 are separated fromeach other, thus leaving large open zones, and these zones are closedvby the joining plates 11. While these joining plates are detachable andmay readily be removed by taking oil' the brackets 20 and' removing thebolts 18, it is seldom necessary to remove the joining plates, for thereason that the twyer cylinders 12 are movable independently of cach.other and the sleeves '16 are removable independently of each other andof the castings in question.

The furnace above described admits of considerable adaptability and maybe run continuously even if the twyer cylinders frequently get out oforder; that is to say,

, if. anything goes wrong with a twyer cylinder that particulariylindermay be removed and readily replace without materiall in'- terferingwithvthe general operation o the are engaged by right of Fig. 1.

furnace. Similarly any twyer sleeve 16 ma be removed in ependently ofthe twyer cylinder 12 containing it.

The twyer pipe 26 supplies cool air around .5 the sleeves 16 and thepipe 25 supplies. air

to the furnace proper. same construction of twyer construction may beemployed for burning gases.

My invention deals not so much with the 13 use to which the twyers areapplied as to the general construction whereby these parts are readilyrendered removable and whereby the other results above described areattained.' 15

of each other, so that either o them may be re aired or removed withoutdisturbing the ot er.

By means of the construction above described the several twyers act iiivunison upon the body of ore or charge in much the same manner that asingle twyer would act, yet the individuality of each twyeris maintainedas above described, for purposes of removal, replacement and repair.lVhile attainin these desirable results the consti-uction a o permitsthe introduction, into a charge of ore, of large quantities of air andcombustible gases.

It will be noted from the above description that there are a number oftwyers projecting into a continuous longitudinal opening, the twyersretaining their individuality to a certain extent, but in a measuremerging their effects and acting, to some extent, as a single twyer oflarge size. This obviates the tendency of the separate twyers tolocalize their heat. It also ino ration gives a more generaldistribution o the air to the artially melted charge, as the latterpasses ownwardly and into the molten mass in the lower portion of thefurnace. It may be noted that in the operation of a vcoke furnace thereis often a localization to the effects of the air passing into thefurnace, for the reason that the individual twyers become surrounded inlaces by cold particles of material that iave been partially smeltedabove the twyers. In assing down 50 wardly these particles, partiallysmelted,

. come into contact with the cold air blast and are thus chilled. Theythereupon form bunches surrounding the twyei's. `Interformed areparticles of partially consumed ""5 lwith either gaseous or carbonaceousfuels,

Substantially the The water jackets are entirel independentv twyers areseparated from each other by mingled in the peculiar relations thusl asthe-case ma be, and offers decided advantages over urnaces provided withgaseous ducts or with individual twyers.

.When' the .furance is usedwith solid fuel, such as coke, a considerableeconomy is effected. Ordinarily in burning coke in furnaces the loss offuel 'is great in prof portion to the heat units generated in contactwith the ores, for the reason that the distribution of the air is notproperly proortioned relatively to the burning surfaces. p y myconstruction this is remedied.

Referring again toFig. 1,' it will be noted that the upper water')ackets constitute a sort of contracted throat immediately above thetwyer zone and that the metal well immediately below is comparativelywide. This enables the solid fuel, when fed downwardly by degrees, tospread out a little so i as to compensate for the increased crossdiameter ofthe metal well as compared with that of the contractedthroat. Hence upon each side of the furnace the several` open spaces andthe air and gases can travel 9o laterally along the surface of theburning fuel. ln this way the combustion is rendered much more thorough.In other words, the charge of ore and cokeor fuel when crowded into thenarrow throat between .the upper face presents a comparatively compactform, and coming into contact with the air sets up a more perfectsmelting zone, and the air passing along the open rectangular spacenecessarily comes into` contact with the fuel over a comparatively lar earea, such as is not supplied by pipes in t e ordinary form.` Asportions of partially melted ore and uncoiisumed coke pass downwardly'through the contracted throat ofthe upper Jackets they become loosenedupon entering the wider s ace below, and upon being thus released romrestraint they spread out naturally and loosely at the exact point wherethe combustion is 11o most needed. The enlargement of the lower part ofthe furnace and the scattering or opening up of the charge as it assesdownwardly in front of the rectangu ar air space enable large quantitiesof air to be brought 115 into contact with the suld ores, the resultbeing that in burning off these'ores the waste sulfur is utilized forproducing heat. This gives higher concentration and effects anadditionalv saving of fuel.

vI find that with a furnace arranged as here described the liabilit ofscaffolding or Vclinkering 'is also avoide the lreason being that theair distributes evenly at points immediately below the contractedthroat. Hence, the air in entering the charge does not assume the sha eo jets or definite streams, as in the or inary type of furnace but isallowed to find its way through the adjacent points of the charge. 130

Having thus described my invention, I claim as new and desire to secureby Let ters Patent 1. The combination of up er and lower waterjackets'supported in ependently of cach other, a joining plate mountedupon said upper jacket and depending loosely so as to engage said lowerjacket, and a bracket, mounted upon said lower jacket and provided witha portion hooking over said joining plate.

2. In a furnace, the combination of upper and lower water jackets, ajoining plate supported upon said upper water jacket and dependingobliqucly upon said lower water jacket, said joining plate beingprovided with a plurality of separate openings spaced apart, and aplurality of twyers reaching directly through said joining plate and eX-tending obliqiiely downward therefrom.

In a furnace, the combination of an upper portion provided with a waterjacket, and also with a. throat, a lower portion of greater diameterthan said upper portion, plates connected with said upper portion andinclined obliquely so as to engage said lower portion, and twyersdetacliably connected with said plates.

4. In a furnace, the combination of an upper portion providedat itslower end with 'a throat, alower portion of greater diameter than saidthroat, said upper portion and said lower portion being separated by acontinuous space, and a plurality of individual twyers extending intosaid space for the purpose of partially merging the ell'ects of saidtwyers.

5. In a furnace, the combina-tion of an upper portion provided with athroat, a lower portion having an openingof greater diameter than saidthroat, means for supporting said upper portion independently of saidlower portion, plates connected with said upper portion and dependinginto engagement with said lower portion, the space adjacent to saidplate and intermediate said upper portion and said lower portion beingcontinuous, and a plurality of twyers mounted upon saidl plate andextending therethrough into said space.

(i. In a furnace, the combination of an upper portion provided at itslower end with a throat of comparatively small diameter, a lower portionof greater diameter than said throat, plates connected with said upperportion and depending obliquely downivard into engagement with saidlower portion, the space intermediate said upper portion, and said lowerportion, and immediately adjacent to said lates, being continuous, and anumber o? twyers mounted upon said plates and projecting obliquelydownward through the latter into said space.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

.BURT L. WORTHEN. Witnesses WAL'roN HARRISON, EvERAnD BOLTON MARSHALL.

